# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

import os

from .tester import Tester
from .util import run_cmd, ARROW_ROOT_DEFAULT, log


class RustTester(Tester):
    PRODUCER = True
    CONSUMER = True
    # FLIGHT_SERVER = True
    # FLIGHT_CLIENT = True

    EXE_PATH = os.path.join(ARROW_ROOT_DEFAULT, 'rust/target/debug')

    RUST_INTEGRATION_EXE = os.path.join(EXE_PATH,
                                        'arrow-json-integration-test')
    STREAM_TO_FILE = os.path.join(EXE_PATH, 'arrow-stream-to-file')
    FILE_TO_STREAM = os.path.join(EXE_PATH, 'arrow-file-to-stream')

    # FLIGHT_SERVER_CMD = [
    #     os.path.join(EXE_PATH, 'flight-test-integration-server')]
    # FLIGHT_CLIENT_CMD = [
    #     os.path.join(EXE_PATH, 'flight-test-integration-client'),
    #     "-host", "localhost"]

    name = 'Rust'

    def _run(self, arrow_path=None, json_path=None, command='VALIDATE'):
        cmd = [self.RUST_INTEGRATION_EXE, '--integration']

        if arrow_path is not None:
            cmd.append('--arrow=' + arrow_path)

        if json_path is not None:
            cmd.append('--json=' + json_path)

        cmd.append('--mode=' + command)

        if self.debug:
            log(' '.join(cmd))

        run_cmd(cmd)

    def validate(self, json_path, arrow_path):
        return self._run(arrow_path, json_path, 'VALIDATE')

    def json_to_file(self, json_path, arrow_path):
        return self._run(arrow_path, json_path, 'JSON_TO_ARROW')

    def stream_to_file(self, stream_path, file_path):
        cmd = [self.STREAM_TO_FILE, '<', stream_path, '>', file_path]
        self.run_shell_command(cmd)

    def file_to_stream(self, file_path, stream_path):
        cmd = [self.FILE_TO_STREAM, file_path, '>', stream_path]
        self.run_shell_command(cmd)

    # @contextlib.contextmanager
    # def flight_server(self):
    #     cmd = self.FLIGHT_SERVER_CMD + ['-port=0']
    #     if self.debug:
    #         log(' '.join(cmd))
    #     server = subprocess.Popen(cmd,
    #                               stdout=subprocess.PIPE,
    #                               stderr=subprocess.PIPE)
    #     try:
    #         output = server.stdout.readline().decode()
    #         if not output.startswith("Server listening on localhost:"):
    #             server.kill()
    #             out, err = server.communicate()
    #             raise RuntimeError(
    #                 "Flight-C++ server did not start properly, "
    #                 "stdout:\n{}\n\nstderr:\n{}\n"
    #                 .format(output + out.decode(), err.decode()))
    #         port = int(output.split(":")[1])
    #         yield port
    #     finally:
    #         server.kill()
    #         server.wait(5)

    # def flight_request(self, port, json_path):
    #     cmd = self.FLIGHT_CLIENT_CMD + [
    #         '-port=' + str(port),
    #         '-path=' + json_path,
    #     ]
    #     if self.debug:
    #         log(' '.join(cmd))
    #     run_cmd(cmd)
